|By Radu-Sorin Marinas

BUCHAREST (Reuters) - Romanian Justice Minister Florin Iordache resigned on Thursday after a decree on corruption that he drafted triggered a week of street protests, international criticism and finally an embarrassing climbdown by the month-old government.

The decree would have effectively shielded dozens of public officials from prosecution for graft and was widely viewed as reversing Romania's drive to tackle endemic corruption. The government rescinded the decree on Sunday after the biggest protests in the country since the fall of communism in 1989.

"Ever since I arrived at the justice ministry I have ...done all legal steps to fix a series of existing and fairly sensitive problems," Iordache told reporters.

"As you have seen, all the initiatives I have undertaken are legal and constitutional. However, this was not enough for public opinion, so I have decided to submit my resignation."

Prime Minister Sorin Grindeanu said European Affairs Minister Ana Birchall would also hold the justice portfolio until a permanent replacement for Iordache was chosen.

President Klaus Iohannis has the final say in approving ministerial replacements.

Iohannis, a former leader of the center-right opposition, strongly criticized the government over the decree. He has also called for a national referendum on continuing the fight against corruption.

The government easily survived a vote of no-confidence on Wednesday as it has a large parliamentary majority following an election in December. Parliament must still endorse the government's decision to rescind the decree.

Earlier on Thursday Romania's constitutional court said it would not rule on the decree as it had now been ditched. The country's ombudsman had earlier asked the court to intervene.

Anti-government demonstrators took to the streets for a tenth consecutive day on Thursday, though numbers have fallen sharply since Sunday when a quarter of a million people took part in capital Bucharest.